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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Fe(TeO3)2 by Materials Project

Fe(TeO3)2 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional and consists of two Fe(TeO3)2 frameworks. Fe2+ is bonded to six O2- atoms to form distorted edge-sharing FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.90–2.11 Å. Te5+ is bonded in a 3-coordinate geometry to four O2- atoms. There are a spread of Te–O bond distances ranging from 1.93–2.44 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Fe2+ and one Te5+ atom. In the second O2- site, O2- is bonded in a water-like geometry to two equivalent Fe2+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Fe2+ and two equivalent Te5+ atoms. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Te5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaFe(TeO3)2 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe5Te6(ClO9)2 by Materials Project

Fe5(TeO3)6Cl2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Fe+2.80+ sites. In the first Fe+2.80+ site, Fe+2.80+ is bonded to six O2- atoms to form edge-sharing FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.99–2.06 Å. In the second Fe+2.80+ site, Fe+2.80+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 49–57°. There are a spread of Fe–O bond distances ranging from 2.03–2.54 Å. In the third Fe+2.80+ site, Fe+2.80+ is bonded to six O2- atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 49–57°. There are a spread of Fe–O bond distances ranging from 1.97–2.11 Å. There are three inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four O2- and two equivalent Cl1- atoms. There are a spread of Te–O bond distances ranging from 1.92–2.47 Å. There are one shorter (3.27 Å) and one longer (3.35 Å) Te–Cl bond lengths. In the second Te4+ site, Te4+ is bonded in a 5-coordinate geometry to five O2- and one Cl1- atom. There are a spread of Te–O bond distances ranging from 1.91–2.61 Å. The Te–Cl bond length is 3.33 Å. In the third Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- and three equivalent Cl1- atoms. There is two shorter (1.91 Å) and one longer (1.95 Å) Te–O bond length. There are a spread of Te–Cl bond distances ranging from 3.01–3.41 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe+2.80+, one Te4+, and one Cl1- atom. The O–Cl bond length is 3.42 Å. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe+2.80+ and one Te4+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Fe+2.80+, one Te4+, and one Cl1- atom. The O–Cl bond length is 3.31 Å. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Fe+2.80+ and two equivalent Te4+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe+2.80+ and one Te4+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe+2.80+, two Te4+, and one Cl1- atom. The O–Cl bond length is 3.32 Å. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Fe+2.80+, one Te4+, and one Cl1- atom. The O–Cl bond length is 3.30 Å. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe+2.80+, two Te4+, and two equivalent Cl1- atoms. There are one shorter (3.24 Å) and one longer (3.57 Å) O–Cl bond lengths. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe+2.80+ and one Te4+ atom. Cl1- is bonded in a 6-coordinate geometry to six Te4+, six O2-, and two equivalent Cl1- atoms. There are one shorter (3.55 Å) and one longer (3.79 Å) Cl–Cl bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2Te4H3ClO12 by Materials Project

H3Fe2(TeO3)4Cl crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Fe3+ is bonded to six O2- atoms to form edge-sharing FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.97–2.13 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.02 Å) and one longer (1.60 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a linear geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.21 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- and one Cl1- atom. There is one shorter (1.92 Å) and two longer (1.96 Å) Te–O bond length. The Te–Cl bond length is 3.14 Å. In the second Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- and one Cl1- atom. There are a spread of Te–O bond distances ranging from 1.90–1.95 Å. The Te–Cl bond length is 3.08 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+ and one Te4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Fe3+ and one Te4+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Te4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Fe3+, one H1+, and one Te4+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Fe3+ and one Te4+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one H1+ and one Te4+ atom. Cl1- is bonded in a distorted square co-planar geometry to four Te4+ atoms.

36 MATERIALS SCIENCE↗